Vol. 34, pp. 33-40 March 31, 1921 



PROCEEDINGS 



or THK 



BIOLOGICAL SOCIETY OF WASHINGTON 



NEW MARINE MOLLUSKS FROM THE WEST COAST 



OF AMERICA. 



BY PAUL BARTSCH.i 



There have come to the National Museum from time to time 

 among miscellaneous lots of moUusks sent here for determina- 

 tion, forms which have not been previously described. Nine 

 of these from the northwest coast of America are named in the 

 present communication. I should very much like to pubhsh 

 illustrations of these in connection with these descriptions, but 

 lack of the necessary artist precludes doing so at the present 

 time. I would withold these descriptions until that deficiency 

 could be supphed, were it not for the fact that I am urged by 

 our correspondents to give a status to these species, since they 

 are to figure in a larger report on the shells of the Puget Sound 

 region, by Mrs. Oldroyd. I wil' say, however, that the short- 

 coming will be made up in the next communication on West 

 American marine shells. 



Turbonilla (Strioturbonilla) kincaidi, new species. 



Shell rather broadly elongate conic, yellowish white. Nuclear whorls 

 decollated. The remaining turns are moderately well rounded and some- 

 what overhanging, appressed at the summit, decidedly constricted at the 

 suture, marked by rather depressed, slightly retractively slanting axial ribs, 

 of which eighteen occur upon the first of the remaining turns, and twenty 

 upon all the other turns. The spaces which separate the ribs are moder- 

 ately impressed and terminate roundly about one-eighth of the distance 

 between the summit and the suture, anterior to the suture. Periphery of 

 the last whorl well rounded. Base short, inflated, well rounded, marked 

 by the feeble continuation of the axial ribs, which become evanescent before 

 reaching the umbilicus. In addition to the above sculpture the entire sur- 

 face of the spira and base is marked by very fine closely spaced spiral stria- 

 tions. Aperture rather large, very broadly oval, almost subquadrate; pos- 



1 Published by permission of the Secretary of the Smithsonian Institution. 

 4_Pboc. Biol. Soc. Wash., Vol. 34, 1921. (33) 



